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In a universe full of motion, change is inevitable. Luckily, we find that some motions?like a planet orbiting the sun?are relatively constant and repetitive, and obey natural laws that we can come to understand thr...

The teaching of physics is clearly enhanced by the use of demonstrations. Visual examples of abstract concepts aid immeasurably in their mastery. They also provide an opportunity to illustrate the scientific method and...

Created by Paul Falstad, this page compares the distance/magnitude/size of various objects or constants. This includes physical dimensions such as the diameter of particles, atoms and biological cells, the height of Mt....

This page, authored and curated by David P. Stern, and its annex describes, in trivial terms, the physics of magnetic fields and the history of its discovery. Included is the work of Halley, Oersted, Ampere and Maxwell....

In this article we will not attack the difficult problem of designing instruction to accommodate CS preconceptions. But let us note that CS concepts experience providing meaning to our natural language. Discourse on...